National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Cold Front Moving Through the Northeast U.S. Monday; Atmospheric River to Impact the Pacific Northwest Midweek

A cold front will cross the Great Lakes and Northeast U.S. through Monday with gusty winds and areas of rain showers. A strong atmospheric river is expected to move into the Pacific Northwest by midweek bringing a threat for moderate to heavy rainfall, gusty winds, and mountain snows for parts of Washington, Oregon, northern California, and the Sierra Nevada. Read More >

Current conditions at

DIABLO GRANDE (DBLC1)

Lat: 37.32927°NLon: 121.29538°WElev: 1861.0ft.

NA

72°F

22°C

Humidity 46%
Wind Speed ENE 7 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Last update 02 Nov 04:00 PM PST
Extended Forecast for

13 Miles NE Mount Hamilton CA

  • Tonight

    Tonight: Mostly clear, with a low around 48. Light southwest wind.

    Low: 48 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 67. Light and variable wind becoming west southwest around 5 mph.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 45. Light southwest wind.

    Low: 45 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66. South wind 5 to 7 mph.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Showers likely after 4am. Mostly cloudy, with a low around 48. South wind 9 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 48 °F

    Mostly Cloudy
    then Showers
    Likely

  • Wednesday

    Wednesday: Showers, mainly before 4pm. High near 54. Chance of precipitation is 90%.

    High: 54 °F

    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers before 10pm. Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 48. Light southwest wind.
Monday
Sunny, with a high near 67. Light and variable wind becoming west southwest around 5 mph.
Monday Night
Mostly clear, with a low around 45. Light southwest wind.
Tuesday
Mostly sunny, with a high near 66. South wind 5 to 7 mph.
Tuesday Night
Showers likely after 4am. Mostly cloudy, with a low around 48. South wind 9 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Wednesday
Showers, mainly before 4pm. High near 54. Chance of precipitation is 90%.
Wednesday Night
A 50 percent chance of showers before 10pm. Mostly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Mostly clear, with a low around 44.
Friday
Sunny, with a high near 62.
Friday Night
Mostly clear, with a low around 45.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 47.
Sunday
A slight chance of showers. Partly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NE Mount Hamilton CA
 37.49°N 121.48°W (Elev. 2799 ft)
Last Update:
1:21 pm PST Nov 2, 2025
Forecast Valid:
5pm PST Nov 2, 2025-6pm PST Nov 9, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation